Your child is always allowed to change their mind and decide they no longer want to do something. Saying yes once does not mean they have to keep saying yes.
This is one of the most important concepts for children and teens to understand. Consent is not a contract. It is an ongoing choice that can change at any time.
You can reinforce this by saying, “You can change your mind at any time. A yes earlier does not mean you owe anything later.” This message helps children feel less trapped in situations where they initially agreed but later became uncomfortable, and it supports their ability to trust their own feelings and boundaries.